From the Cardiovascular Institute (M.A.S., S.M., J.G., D.M.M.), Division of Cardiothoracic Surgery (R.L.K.), Department of Medicine (P.N.), Artificial Heart Program (S.W.), School of Medicine (M.H.), and McGowan Institute for Regenerative Medicine (R.L.K., S.M., D.M.M.), University of Pittsburgh Medical Center, Pittsburgh, Pa.(2005-08-30時点)